Find the LCD of the given rational expressions.

A. (y + 2)(y - 4)
B. -(y + 2)(y + 4)
C. -(y - 2)(y + 4)
D. (y - 2)(y + 4)


Answer: C

Mathematics

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A right regular n-gon pyramid has 28 edges.

(a) What n-gon is it? Show your work. (b) How many faces does the pyramid have? (c) How many vertices does the pyramid have?

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Use the compound-interest formula to find the account balance with the given conditions: P = principal, r = interest rate, t = time, in years.P = $480, t = 8, r = 8% compounded quarterly

A. $424.58 B. $904.58 C. $888.45 D. $886.84

Mathematics

Solve.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 35 questions correct. What was the percent increase?

A. 60% B. 10% C. 28.6% D. 40%

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Let f(x, y, z) = xyz. Find the point(s) where f(x, y, z) may have a possible relative maximum or minimum, subject to the constraint x + 6y + 3z = 36 and where x > 0, y > 0, z > 0. Use the method of Lagrange multipliers.Enter your answer as just (a, b, c) where a, b, c are all integers.

Fill in the blank(s) with the appropriate word(s).

Mathematics